The direction or the magnitude of an effort can be changed by a machine.

True

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False

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Solution

The correct option is A True
A machine is a mechanical device that multiplies effort or changes the direction of effort. The speed can also be gained by a machine. Lever, wheel, axle, and pulley are examples of a simple machine.

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Assertion: The accelerated motion of an object may be due to change in magnitude of velocity or direction of velocity or both.

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Q. By changing the direction of force, effort can not be reduced.

A machine is a device which can either overcome a large resistive force (or load) at some point by applying a small force (or effort) or by which we can obtain a gain in speed.

X = -5 can this be expressed as a linear equation in two variables?

True

False

Q. If a machine overcomes a load

L

and the distance travelled by the load is

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E

and the distance travelled by effort is

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The direction or the magnitude of an effort can be changed by a machine.

The correct option is A TrueA machine is a mechanical device that multiplies effort or changes the direction of effort. The speed can also be gained by a machine. Lever, wheel, axle, and pulley are examples of a simple machine.

The correct option is A True
A machine is a mechanical device that multiplies effort or changes the direction of effort. The speed can also be gained by a machine. Lever, wheel, axle, and pulley are examples of a simple machine.