Connected particles

A car of mass 800 kg is pulling a trailer of mass 200 kg . each of the car and the trailer experience a resistance of 200 N. The car and trailer are accelerating at 1.3 ms^-2.

What is the driving force of the car?

• 1500 N

• 1700 N

• 1300 N

• 2000 N

A car of mass 800 kg is pulling a trailer of mass 200 kg . each of the car and the trailer experience a resistance of 200 N. The car and trailer are accelerating at 1.3 ms^-2.

What is the tension in the tow bar between the car and the trailer?

• 60 N

• 260 N

• 460 N

• 4508 N

A light string passes over a smooth pulley and is connected to a mass of 5 kg on one end and a mass 7 kg on the other end. the system is allowed to move freely.

The acceleration of the system is

• 1.63 ms^-2

• 0.82 ms^-2

• 4.08 ms^-2

• 6.24 ms^-2

A light string passes over a smooth pulley and is connected to a mass of 5 kg on one end and a mass 7 kg on the other end. the system is allowed to move freely.

The tension in the string is

• 6.8 N

• 57.2 N

• 80.0 N

• 37.4 N

A mass of 3 kg lies on a smooth table and it is connected to another mass of 7 kg hanging vertically by a light inextensible string which passes over a smooth pulley

The acceleration of the system is

• 2.94 ms^-2

• 9.8 ms^-2

• 0.4 ms^-2

• 6.86 ms^-2

A mass of 3 kg lies on a smooth table and it is connected to another mass of 7 kg hanging vertically by a light inextensible string which passes over a smooth pulley.

The tension in the string is

• 29.4 N

• 68.6 N

• 20.58 N

• 116.62 N

A mass of 3 kg lies on a smooth table and it is connected to another mass of 7 kg hanging vertically by a light inextensible string which passes over a smooth pulley.

The magnitude of the force on the pulley is

• 29.1 N

• 20.58 N

• 41.16 N

• 68.6 N