EASY
11th ICSE
IMPORTANT
Earn 100

A lift of 400 kg is hung by a wire. Calculate the tension in the wire when the lift is moving upward with a constant velocity of 1.0 m/s.

Important Questions on Force : Newton's Laws of Motion

EASY
11th ICSE
IMPORTANT
A lift of mass 400 kg is hung by a wire. Calculate the tension in the string when the lift is moving upward with an acceleration of 2 m/s2.
EASY
11th ICSE
IMPORTANT
A lift of mass 400 kg is hung by a wire. Calculate the tension in the wire when the lift is moving downward with an acceleration 2.0 m/s2.g=9.8 m/s2
EASY
11th ICSE
IMPORTANT
A body of mass 10 kg is hung by a spring balance in a lift. What would be the reading of the balance when the lift is ascending with an acceleration of 2 m/s2g=10 m/s2
EASY
11th ICSE
IMPORTANT
A body of mass 10 kg is hung by a spring balance in a lift. What would be the reading of the balance when the lift is descending with an acceleration of 2 m/s2g=10 m/s2
EASY
11th ICSE
IMPORTANT
A body of mass 10 kg is hung by a spring balance in a lift. What would be the reading of the balance when the lift is descending with a constant velocity of 2 m/s.g=10 m/s2
EASY
11th ICSE
IMPORTANT

A machine gun of mass  5 kg fires 30 bullets, each of mass 50 g, per minute at a speed of 400 m/s. What force must be exerted to keep the gun in position?

EASY
11th ICSE
IMPORTANT
A proton(mass=1.67×10-27 kg) on striking a neutron(mass nearly equal to the proton) forms a deuteron. What would be the velocity of the deuteron if it is formed by a proton moving left with a velocity of 7.0×106 m/s and a neutron moving right with a velocity of 4×106 m/s?
EASY
11th ICSE
IMPORTANT
10 g moving body is acted upon by a force of 10 N for 3 μs. Compute the impulse and the change in velocity of the body.