Answer:
35.1688 seconds
Explanation:
M = Mass of sphere = 8200 kg
R = Radius of sphere = 90 cm
F = Force = 30 N
Moment of inertia is given by

Torque is given by

For one rotation

The time taken to rotate the sphere from rest is 35.1688 seconds
I think it would be thermal energy
ANSWER:
101.08 joules.
STEP-BY-STEP EXPLANATION:
Given:
m = 0.140 kg
v = 38.0 m/s
Kinetic energy can be calculated using the following formula:

Replacing

The kinetic energy of baseball is 101.08 joules.
Answer:25 N
Explanation:
Given
mass of 5 , 3 & 2 kg blocks lie on floor
Force on 50 N pushes the 5 kg box
be the reaction on 2 kg box therefore

where a is the acceleration of the system
reaction on 3 kg block by 5 kg block


Now for 5 kg block

F=10a

Force exerted by 5 kg block on 3 kg block is

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