Quiz 4.08: CONNECTED BODIES /ELEVATOR PROBLEMS

The internal resistance offered to the flow of a fluid is known as

A 5kg steel block is resting on a horizontal table. The coefficient of static fiction is 0.75 while dynamic friction is 0.57. Calculate the minimum force required to just move the block. g=9.8m/s^2.

Calculate the apparent weight loss of a man weighing 70 kg in an elevator moving  downwards with an acceleration of 1.5m/s (g=10m/s^2).

A body weighing 80N stands in an elevator that is about to move. The force exerted by the floor on the body as the elevator moves upwards with an acceleration of 5m/s^2 is ? (g=10m/s^2).

A 80kg man stands on a scale inside an elevator. What is the weight that the scale reads when the elevator is moving downwards at 4m/s^2 (g=10m/s^2).

An 80kg man stands on a scale inside an elevator. What is the weight when the elevator is accelerating upwards at 4m/s^2 , g=10m/s^2.

A block lies on a smooth horizontal surface, calculate the acceleration of the system

Calculate the tension in the string in the connected bodies shown, assume the surface is smooth.

The figure shows two masses M1 and M2 in equilibrium under the influence of gravity, what is the tension in the upper sting?

The acceleration of the system shown is?