The mass of `m_2` was reduced to 50% and the force exerted by `m_1`on `m_2` is 20 N. what is the force exerted by `m_2`on `m_1`?

An aeroplane flying in the sky with a uniform speed of 200 m//s moves in a vertical circle of radius 400 m. The mass of the pilot is 70 kg. The force exerted by the pilot on the seat at the highest point of the circle will be [Take g=10 m//s^2 ]

A cricket ball of mass 0.5 kg strikes a circket bat normally with a velocity of 20" m s"^(-1) and rebounds with a velocity of 10" m s"^(-1) . The impulse of the force exerted by the ball on the bat is

Choose the correct options A ball of mass 250 g moving with 20 m//s strikes a vertical wall and rebounds along the same line with a velocity of 15 m//s . If the time of contact is 0.1 s, the force exerted by the wall on the ball is

In the above problem, the force exerted by the pilot on the seat at the lowest point of the circle will be [Take g=10 m//s^2 ]

A wind with speed 40 m//s blows parallel to the roof of a house. The area of the roof is 250 m^(2) . Assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be : (rho_(air)=1.2 kg//m^(3))

Three blocks with masses m, 2m and 3m, are connected by strings, as shown in the figure. After an upward fforce F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity)

The period of oscillation of a body of mass m_1 suspended from a lightspring is T. When the body of mass m_2 , is tied to the first body and the system is made to oscillate, the period is 2T. Compare the masses m_1 and m_2 .

Consider a sytem of two particles having masses m_(1) and m_(2) . If the particle of mass m_(1) is pushed towards the centre of mass of particles through a distance d , by what distance would the particle of mass m_(2) move so as to keep the mass centre of particles at the original position?

A charge q_1 exerts some force on a second charge q_2 . If third charge q_3 is brought near charge q_1 , the force of q_1 exerted on q_2