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Physics

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Cards in this guide (11)
Momentum is defined as the rate at which work is done true or false

False

Inclined plane makes work easier by increasing the distance and decreasing the

force

If you want to lift a 5 kg box to a height of 2 meters how much work must be done

C.50 j

When only mechanical energy acts on an object what is conserved

gravity

What is the mechanical advantage of a ramp What is the mechanical advantage of a ramp standing straight up

The mechanical Advantage is FORCE TIMES DISTANCE

If the force moving an object points at least partially in the opposite direction of the object's motion what is the work considered to be

negative

What is the potential energy of a 2 kilogram potted plant that is on a 1 meter high plant stand

19.6 joules, established that the gravity is 9.8 m/s^2

What is the formula used to calculate mechanical advantage

Mechanical advantage=load/effort

How much work must be done on a 5kg snowborad to increase its speed from 2ms to 4ms

1500 j

What is the Ideal Mechanical Advantage when a screwdriver with a handle of radius 1.2 cm is used to remove a screw in the back of a computer and the screw moves out 0.20 cm on each turn

There is no advantage whether the handle is 1.2 cm or 10 cm, the screw will still only make one revolution. The reason being is that both the screw driver and the screw become part of the whole. The only increase in the screws revolutions is if the screw driver is geared to make more than one turn of the screw.

How do you calculate the work done on a object

To calculate work done on an object one needs to use the following equation; work = force x distance or W = F x d

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