Fixed Pulley

Q. A crane uses _________ to help it lift heavy loads.

1. pulley
2. screw
3. wedges
4. axle

Q.

An inclined plane is always a

Q.

Which of the following statements are true about an ideal single fixed pulley.

1. it changes the direction of the force.

2. it changes the magnitude of the force

3. its mechanical advantage is $2$

4. it is not a simple machine

Q. A pulley is used because it:

1. Has the mechanical advantage greater than one
2. Has 100% efficiency
3. Helps to apply the force in a convenient direction
4. Requires more effort to raise a less load

Q.

Draw a neat labelled diagram showing a pulley being used to lift a load. How are load and effort related in an ideal situation?

Q.

The machine which is responsible for changing the direction of application of force:

1. Scissors

2. Wheel

3. Wedge

4. Screw

Q. Which of the following situation is not the effects of force?

1. When you pull the end of a rope in the game of tug of war.
2. When you push a box kept on the table.
3. When you push the wall of your classroom.
4. When you pull the door to open.

Q. What kind of machine is used in a flagpole?

1. Pulley
2. Wedge
3. Lever
4. Inclined plane

Q.

Draw a neat labelled diagram showing a pulley being used to lift a load. How are load and effort related in an ideal situation?

Q. Pulley is used to _________ of force.

1. Decrease the value
2. Change the direction
3. Increase the value
4. None of these

Q.

In which direction is the effort applied in the simple pulley displayed below?

1. Upwards

2. Downwards

3. Towards the left

4. Towards the right

Q. A single fixed pulley can change the ______ of the force applied on the load.

1. magnitude
2. direction
3. (a) and (b) above.
4. None of the above

Q.

The machine which is responsible for changing the direction of application of force:

1. Screw

2. pulley

3. Wedge

4. See-saw

Q. Lever of second order has _________ at centre.

1. fulcrum

2. load

3. effort

4. load arm

Q. Which of the following primarily changes the direction of the effort applied?

1. Pulley
2. Wheel-axle
3. Lever II
4. Lever I