Question

1.) A merry go round is accelerated at a constant rate of 0.005 rev/s², starting from rest. (a) What is its rotational velocity at the end of 1 min? (b) How many revolutions does the merry go round make in 1 min? 2.) A force of 5.0 N is applied at the end of a lever that has a length of 2.0 meters. If the force is applied at an angle of 30 degrees at the end of the lever, what will be the magnitude of the torque? 3.) What force is necessary to generate a 20.0 N*m torque at an angle of 50 degrees from along a 3.00 m rod? +0.4 m -0.5 m? 30 kg 40 kg 45 kg X = ? 4.) The 3m long uniform plank is supported by a fulcrum at the midpoint. Where should a 45kg student must be from the midpoint to be able to balance the plank? 0.9 m + 3.6 m A B The uniform diving board has a mass of 26 kg. Find the force on the support A when a 69 kg diver stands at the end of the diving board. 6.) A 5 kg disk with radius of 1.3m is spinning at an angular speed of 15 rad/s. (a) What is the inertia of the solid disk? (b) What is the rotational kinetic energy of the disk? 7.) A sphere rolls down a 20 deg incline starting from rest to a height of 50m. how fast will it be moving forward when it reaches the bottom of the incline?

          1.) A merry go round is accelerated at a constant rate of
0.005 rev/s², starting from rest. (a) What is its rotational
velocity at the end of 1 min? (b) How many revolutions does
the merry go round make in 1 min?
2.) A force of 5.0 N is applied at the end of a lever that has a
length of 2.0 meters. If the force is applied at an angle of 30
degrees at the end of the lever, what will be the magnitude
of the torque?
3.) What force is necessary to generate a 20.0 N*m torque
at an angle of 50 degrees from along a 3.00 m rod?
+0.4 m -0.5 m?
30 kg
40 kg
45 kg
X = ?
4.) The 3m long uniform plank is supported by a fulcrum at
the midpoint. Where should a 45kg student must be from
the midpoint to be able to balance the plank?
0.9 m
+
3.6 m
A
B
The uniform diving board has a mass of 26 kg. Find the
force on the support A when a 69 kg diver stands at the end
of the diving board.
6.) A 5 kg disk with radius of 1.3m is spinning at an angular
speed of 15 rad/s. (a) What is the inertia of the solid disk?
(b) What is the rotational kinetic energy of the disk?
7.) A sphere rolls down a 20 deg incline starting from rest to
a height of 50m. how fast will it be moving forward when it
reaches the bottom of the incline?

1.) A merry go round is accelerated at a constant rate of
0.005 rev/s², starting from rest. (a) What is its rotational
velocity at the end of 1 min? (b) How many revolutions does
the merry go round make in 1 min?
2.) A force of 5.0 N is applied at the end of a lever that has a
length of 2.0 meters. If the force is applied at an angle of 30
degrees at the end of the lever, what will be the magnitude
of the torque?
3.) What force is necessary to generate a 20.0 N*m torque
at an angle of 50 degrees from along a 3.00 m rod?
+0.4 m -0.5 m?
30 kg
40 kg
45 kg
X = ?
4.) The 3m long uniform plank is supported by a fulcrum at
the midpoint. Where should a 45kg student must be from
the midpoint to be able to balance the plank?
0.9 m
+
3.6 m
A
B
The uniform diving board has a mass of 26 kg. Find the
force on the support A when a 69 kg diver stands at the end
of the diving board.
6.) A 5 kg disk with radius of 1.3m is spinning at an angular
speed of 15 rad/s. (a) What is the inertia of the solid disk?
(b) What is the rotational kinetic energy of the disk?
7.) A sphere rolls down a 20 deg incline starting from rest to
a height of 50m. how fast will it be moving forward when it
reaches the bottom of the incline?

Added by Dwayne N.

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