Question 10
FA student measures the work done in pulling a wooden block along a bench.
The Figure shows the apparatus.
Figure
The student pulls the block 0.80 m along the bench and repeats the measurement of the force three times.
The Table shows the results.
Table
| Trial | Force in N\text{N}N |
|---|---|
| 1 | 3.1 |
| 2 | 3.4 |
| 3 | 3.2 |
a.[3]
Describe how the student can use this apparatus to measure the work done in pulling the block 0.80 m along the bench.
b.[2]
Calculate the mean force.
c.[2]
Calculate the work done in pulling the block 0.80 m along the bench, using the mean force.
d.[1]
Suggest why the readings on the force meter were different in each trial.
8.1 Energy transfers and work Questions
115 exam-style questions on Edexcel GCSE Physics 8.1 Energy transfers and work, covering 8.1.1 Energy stores and transfer diagrams, 8.1.2 Ways of changing a system's energy, and 8.1.3 Work done by forces. Each one has a worked solution and a mark scheme showing where the marks go.