• Home
  • Ask directory
  • Physics 101 Mechanics
  • October 2021
  • 8

Physics 101 Mechanics Q&A Archive of October 8, 2021

Select Question

October 8 of 2021

A stone is dropped at t = 0. A second stone, with 5 times the mass of the first, is dropped from the same point at t = 91 ms. (a) How far below the release point is the center of mass of the two stones at t = 340 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass…
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Calculate the thickness of insulation required for a wall of a furnace 0.25m thick
The questions are in the image.
Given: Force F = 400N, Diameter d = 16mm, Length L1 = 90mm, Length L2 = 110mm
Given, Force F = 400N, Diameter d = 16mm, Length L1 = 90mm, Length L2 = 110mm
1. Specify the suitable dimensions for the beam, if it is steel and the allowable normal stress is 100MPa, for the following cross section shapes: a) Square (equation is: square; h=b) b) Rectangle with height three times the width (equation is; h=3b) c) Rectangle with the height one-third…
1. Calculate the reaction forces at point A and C 2. Draw the complete shearing force and bending moment diagrams. Specify the maximum bending moment.
Compare three Sl units: millimeter, kilogram, and microsecond. Which is the largest? a) millimeter c) microsecond b) kilogram d) The units are not comparable
A record of travel along a straight path is as follows: 1. Start from rest with a constant acceleration of 2.77 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 2.05 min. 3. Apply a constant negative acceleration of 29.47 m/s2 for 4.39 s. (a) What was the total displacement…
A record of travel along a straight path is as follows: 1. Start from rest with a constant acceleration of 2.77 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 2.05 min. 3. Apply a constant negative acceleration of 29.47 m/s2 for 4.39 s. (a) What was the total displacement…
A particle starts from rest and accelerates as shown in Figure P2.20. Determine (a) the particle’s speed at t 5 10.0 s and at t 5 20.0 s, and (b) the distance traveled in the first 20.0 s.
For A = 3i + j - k, B = -i + 2j -5k, and C = -2j -3k, find C • (A - B).
When a particle is a distance r from the origin, its potential energy function is given by the equation U(r)=kr, where k is a constant and r=?(x2+y2+z2) (a) What are the SI units of k? (b) Find a mathematical expression in terms of x, y, and z for the y component of the force on the…
Make a parallelogram method to find the resultant and equilibrant of Fa= 5cm;30° and Fb=10cm;150°.
Please answer
47. A ball is thrown downward from the top of a tall cliff with an initial speed of \( 10 \mathrm{~m} / \mathrm{s} \). Determine the velocity and acceleration of the ball at \( t=2 \mathrm{~s} \).
A stone is dropped at t = 0. A second stone, with 5 times the mass of the first, is dropped from the same point at t = 91 ms. (a) How far below the release point is the center of mass of the two stones at t = 340 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass…
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Rank the average gravitational forces from greatest to least between the a. Sun and Mars. b. Sun and the Moon. c. Sun and Earth.
Calculate the thickness of insulation required for a wall of a furnace 0.25m thick
The questions are in the image.
Given: Force F = 400N, Diameter d = 16mm, Length L1 = 90mm, Length L2 = 110mm
1. Specify the suitable dimensions for the beam, if it is steel and the allowable normal stress is 100MPa, for the following cross section shapes: a) Square (equation is: square; h=b) b) Rectangle with height three times the width (equation is; h=3b) c) Rectangle with the height one-third…
1. Calculate the reaction forces at point A and C 2. Draw the complete shearing force and bending moment diagrams. Specify the maximum bending moment.
Compare three Sl units: millimeter, kilogram, and microsecond. Which is the largest? a) millimeter c) microsecond b) kilogram d) The units are not comparable
A record of travel along a straight path is as follows: 1. Start from rest with a constant acceleration of 2.77 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 2.05 min. 3. Apply a constant negative acceleration of 29.47 m/s2 for 4.39 s. (a) What was the total displacement…
A record of travel along a straight path is as follows: 1. Start from rest with a constant acceleration of 2.77 m/s2 for 15.0 s. 2. Maintain a constant velocity for the next 2.05 min. 3. Apply a constant negative acceleration of 29.47 m/s2 for 4.39 s. (a) What was the total displacement…
A particle starts from rest and accelerates as shown in Figure P2.20. Determine (a) the particle’s speed at t 5 10.0 s and at t 5 20.0 s, and (b) the distance traveled in the first 20.0 s.
For A = 3i + j - k, B = -i + 2j -5k, and C = -2j -3k, find C • (A - B).
When a particle is a distance r from the origin, its potential energy function is given by the equation U(r)=kr, where k is a constant and r=?(x2+y2+z2) (a) What are the SI units of k? (b) Find a mathematical expression in terms of x, y, and z for the y component of the force on the…
Make a parallelogram method to find the resultant and equilibrant of Fa= 5cm;30° and Fb=10cm;150°.
Please answer
47. A ball is thrown downward from the top of a tall cliff with an initial speed of \( 10 \mathrm{~m} / \mathrm{s} \). Determine the velocity and acceleration of the ball at \( t=2 \mathrm{~s} \).