Tag: physics

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Questions Related to physics

Multiple choice physics machines levers and pulleys pulley pulleys

A single fixed pulley is equivalent to a :

  1. first order lever

  2. second order lever

  3. third order lever

  4. complex machine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A single fixed pulley acts like a first-class lever where the axle is the fulcrum, the load is on one side, and the effort is on the other side.

Multiple choice physics a little effort, lot of work levers and pulleys pulley pulleys

In a wheel-and-axle :

  1. wheel rotates freely on axle

  2. wheel is fixed to the axle

  3. direction of the force remains same'

  4. mechanical advantage is always more than one
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In a wheel-and-axle, the wheel and the axle are rigidly connected so that they rotate together around the same axis.

Multiple choice physics machines levers and pulleys pulley pulleys

In a pulley :

  1. Load and effort are equal

  2. Load is greater than effort

  3. Load is less than effort

  4. Both have no relation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a single fixed pulley, the effort required is equal to the load (ignoring friction), as the mechanical advantage is 1.

Multiple choice physics machines levers and pulleys pulley pulleys

In a pulley:

  1. wheel is fixed over the axle

  2. effort is greater than the load

  3. mechanical advantage will be more than one

  4. wheel rotates freely over the axle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A pulley consists of a wheel (sheave) that rotates freely on an axle, allowing the rope to move over it with minimal friction.

Multiple choice physics a little effort, lot of work levers and pulleys pulley pulleys

Wheel-and-axle and rope move in :

  1. Same direction

  2. Opposite direction

  3. Perpendicular direction

  4. There is no relation between the two
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In a wheel-and-axle system, the rope wrapped around the axle moves in the same direction as the rotation of the wheel.

Multiple choice physics a little effort, lot of work levers and pulleys pulley pulleys

In a wheel-and-axle :

  1. Wheel rotates freely on axle

  2. Wheel is fixed to the axle

  3. Direction of the lbrce remains same

  4. Mechanical advantage is always more than one
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A wheel-and-axle is defined by the wheel and axle being fixed together so that they rotate as a single unit.

Multiple choice physics machines levers and pulleys pulley pulleys

A single fixed pulley is

  1. A machine that only changes the direction of the force applied, not the amount

  2. A machine that only changes the amount of force not direction

  3. Both

  4. None
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A single fixed pulley is a machine that only changes the direction of the force applied, not the amount.
The wheel of a fixed pulley does not move because the wheel is attached to some support.

Multiple choice physics machines levers and pulleys pulley pulleys

A single pulley is a :

  1. First order lever

  2. Second order lever

  3. Third order lever

  4. Complex machine
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A single fixed pulley functions as a first-class lever where the axle acts as the fulcrum, the load is on one side, and the effort is on the other.