Pulley

Q.

Which of the following should be used to lift a heavy steel cupboard to the fourth floor of the building?

1. Lever

2. Pulley

3. Inclined plane

4. Wedge

Q.

Which type of pulley is helpful in changing the direction of effort?

1. Fixed pulley

2. Movable pulley

3. Compound pulley

4. Triple pulley

Q. An ideal pulley system can lift a load of 1500 N by an effort of 300 N. The velocity ratio of the system is .

1. $2$
2. $4$
3. $5$

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

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

Q. A heavy block from the ground can easily be lifted up to a higher floor of a building using:

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

Q. A pulley is a wooden or a metallic disc with a grooved ring and a rope around it.

1. True
2. False

Q. Tension always acts as a pulling force.

1. True
2. False

Q. Geetu draws water from a well using a fixed pulley. The mass of the bucket and water together is $6\text{kg}$. If the force applied by her is $70\text{N}$, calculate the mechanical advantage. (Take $g=10{\text{m s}}^{-2}$)

1. 0.857

Q. If an ideal pulley system can lift a load of $2000\text{N}$ by an effort of $500\text{N}$. Find its velocity ratio.

1. 4

Q. Which of the following uses a pulley system?

1. Nut cracker
2. Crane
3. Cable pulley
4. Flagpole
5. Well pulley
6. Hinged oar
7. Window blinds
8. Garage doors