Pulley
Trending Questions
Q.
Which of the following should be used to lift a heavy steel cupboard to the fourth floor of the building?
Lever
Pulley
Inclined plane
Wedge
Q.
Which type of pulley is helpful in changing the direction of effort?
Fixed pulley
Movable pulley
Compound pulley
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 .
- 2
- 4
- 5
Q. Which of the following primarily changes the direction of the effort applied?
- Wheel-axle
- Lever II
- Lever I
- Pulley
Q. A heavy block from the ground can easily be lifted up to a higher floor of a building using:
- Pulley
- Inclined plane
- Wedge
- Screw
Q. A pulley is a wooden or a metallic disc with a grooved ring and a rope around it.
- True
- False
Q. Tension always acts as a pulling force.
- True
- False
Q. Geetu draws water from a well using a fixed pulley. The mass of the bucket and water together is 6 kg. If the force applied by her is 70 N, calculate the mechanical advantage. (Take g=10 m s−2)
- 0.857
Q. If an ideal pulley system can lift a load of 2000 N by an effort of 500 N. Find its velocity ratio.
- 4
Q. Which of the following uses a pulley system?
- Nut cracker
- Crane
- Cable pulley
- Flagpole
- Well pulley
- Hinged oar
- Window blinds
- Garage doors