MEDIUM
Diploma
IMPORTANT
Earn 100

A mass of 2.00 kg rests on a rough horizontal table. The coefficient of static friction between the block and the table is 0.60. The block is attached to a hanging mass by a string that goes over a smooth pulley, as shown in the diagram. Determine the largest mass that can hang in this way without forcing the block to slide.

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Important Questions on Mechanics

EASY
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 44
A girl tries to lift a suitcase of weight 220 N by pulling upwards on it with a force of 140 N. The suitcase does not move. Calculate the reaction force from the floor on the suitcase.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 45
A block of mass 15.0 kg rests on a horizontal table. A force of 50.0 N is applied vertically downward on the block. Calculate the force that the block exerts on the table.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 46

A block of mass M is connected with a string to a smaller block of mass m. The big block is resting on a smooth inclined plane as shown in the diagram. Determine the angle of the plane in terms of M and m in order to have equilibrium.

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EASY
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 47
Describe under what circumstances a constant force would result in an increasing acceleration on a body and a decreasing acceleration on a body.
EASY
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 48
A car of mass 1400 kg is on a muddy road. If the force from the engine pushing the car forward exceeds 600 N, the wheels slip (i.e. they rotate without rolling). Estimate the car’s maximum acceleration on this road.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 50
Get in an elevator and stretch out your arm holding your heavy physics book. Press the button to go up. Describe and explain what is happening to your stretched arm. Describe and explain the same as the elevator comes to a stop at the top floor. What happens when you press the button to go down? What happens when the elevator again stops? Explain your observations carefully using the second law of motion.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 52
A massless string has the same tension throughout its length. Suggest why.
MEDIUM
Diploma
IMPORTANT
Physics for the IB Diploma 6th Edition>Chapter 2 - Mechanics>Test yourself>Q 54
A mass of 3.0 kg is acted upon by three forces of 4.0 N,  6.0 N and 9.0 N and is in equilibrium. Convince yourself that these forces can indeed be in equilibrium. The 9.0 N force is suddenly removed. Determine the acceleration of the mass.