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Physics 101 Mechanics Q&A Archive of October 4, 2021

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October 4 of 2021

QUESTION 2 FIGURE 2.2 FIGURE \( 2.2 \) shows one end of a horizontal spring \( \left(\mathrm{k}-80.0 \mathrm{~N} \mathrm{~m}^{-1}\right) \) is held fixed while an external force is applied to the free end, stretching in slowly frem \( x=0 \mathrm{to} x=4.00 \mathrm{~cm} \). (a) Calculate the…
A system consists of three particles, each of mass 5.00 g, located at the corners of an equilateral triangle with sides of 30.0 cm. (a) Calculate the potential energy of the systems. (b) Assume the particles are released simultaneously. Describe the subsequent motion of each. Will any…
A water pump station is situated at an area where water's temperature is 32 deg Celsius at sea level with a vapor pressure of 4.687 kPaa. The suction head is 8 meters above pump centerline with a flow rate of 0.53 m3/sec and has a friction head loss of 4 meters. The suction pipe has a diameter…
A rock is suspended from a string and moves with a constant upward velocity. Which statement is true concerning the tension in the string? a.The tension is zero. b.The tension is equal to the weight of the mass. c.The tension is equal to the mass. d.The tension is less than the weight of the…
Suppose that a penny is projected from the top of the Chicago’s Sears tower, a height of 1450 [ft] above the ground, with an initial horizontal speed of 20 [mi/h]. How long is the penny in flight before striking the ground ?
A rock is suspended from a string and moves with a constant upward velocity. Which statement is true concerning the tension in the string? a.The tension is zero. b.The tension is equal to the weight of the mass. c.The tension is equal to the mass. d.The tension is less than the weight of…
the sports car, having a mass of 1700 kg, is traveling horizontally along a 20
the sports car, having a mass of 1700
The device shown below is the Atwood's machine considered in Example 6.5. Assuming that the masses of the string and the frictionless pulley are negligible, (a) find an equation for the acceleration of the two blocks; (b) find an equation for the tension in the string; and (c) find both the…
To win the game, a place kicker must kick a football from a point 54m (59.0544 yd) from the goal, and the ball must clear the crossbar, which is 3.05m high. When kicked, the ball leaves the ground with a speed of 26 m/s at an angle of 33.7 degrees from the horizontal. The acceleration of…
thoughtful
Turn air resistance off so the acceleration is a = -9.80 m/s2 (the - sign indicates that the acceleration is down). Set the initial position to y0 = + 1.00 m and the initial velocity to v0y = + 9.00 m/s. You should use principles of physics to answer the following questions, and then verify…
A system consists of three particles, each of mass 5.00 g, located at the corners of an equilateral triangle with sides of 30.0 cm. (a) Calculate the potential energy of the systems. (b) Assume the particles are released simultaneously. Describe the subsequent motion of each. Will any…
A rock is suspended from a string and moves with a constant upward velocity. Which statement is true concerning the tension in the string? a.The tension is zero. b.The tension is equal to the weight of the mass. c.The tension is equal to the mass. d.The tension is less than the weight of the…
Suppose that a penny is projected from the top of the Chicago’s Sears tower, a height of 1450 [ft] above the ground, with an initial horizontal speed of 20 [mi/h]. How long is the penny in flight before striking the ground ?
A rock is suspended from a string and moves with a constant upward velocity. Which statement is true concerning the tension in the string? a.The tension is zero. b.The tension is equal to the weight of the mass. c.The tension is equal to the mass. d.The tension is less than the weight of…
the sports car, having a mass of 1700 kg, is traveling horizontally along a 20
the sports car, having a mass of 1700
The device shown below is the Atwood's machine considered in Example 6.5. Assuming that the masses of the string and the frictionless pulley are negligible, (a) find an equation for the acceleration of the two blocks; (b) find an equation for the tension in the string; and (c) find both the…
To win the game, a place kicker must kick a football from a point 54m (59.0544 yd) from the goal, and the ball must clear the crossbar, which is 3.05m high. When kicked, the ball leaves the ground with a speed of 26 m/s at an angle of 33.7 degrees from the horizontal. The acceleration of…
thoughtful
Turn air resistance off so the acceleration is a = -9.80 m/s2 (the - sign indicates that the acceleration is down). Set the initial position to y0 = + 1.00 m and the initial velocity to v0y = + 9.00 m/s. You should use principles of physics to answer the following questions, and then verify…