A student pushes a 40-N block across the floor for a distance of 10 m. How much work was done to move the block? Question 3 opti
2 answers:
Answer:
The work done to move the block is 400 Joules.
Explanation:
It is given that,
Force acting on the block, F = 40 N
The distance covered by the block, d = 10 m
We need to find the work done by the block. The work done by an object is given by :
W = 400 Joules
So, the work done to move the block is 400 Joules. Hence, the correct option is (B) "400 J".
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Mechanical advantage is defined as the ratio of output load to the input load. The mechanical advantage of the machine will be 0.1.
<h3>What is mechanical advantage?</h3>Mechanical advantage is a measure of the ratio of output force to input force in a system,
It is used to obtain the efficiency of forces in levers and pulleys. It is an effective way of amplifying the force in simple machines like levers.
The theoretical mechanical advantage is defined as the ratio of the force responsible for the useful work in the system to the applied force.
Given
applied force = 250 N
Output force = 25
Mechanical advantage = work output / work input
Hence the mechanical advantage of the machine will be 0.1
To learn more about the mechanical advantage refer to the link;