WorksheetsWork and Simple Machines
Total questions: 12
Worksheet time: 7mins
A player pushes a 250 g hockey puck with a force to accelerate it at 24 m/s² over 0.50 m. How much work is done?
1.5 J
3.0 J
4.0 J
5.2 J
You push a book with a force of 4.6 N across a table for 0.60 m. What's the work done?
2.76 J
7.5 J
1.8 J
5.6 J
How much work is done when lifting a 25 kg bag of sand to a height of 1.1 m?
175 J
220 J
270 J
300 J
A pulley system lifts a 30 kg carton 15.3 m with 211 N over 28.0 m. What's the mechanical advantage (MA)?
2.0
1.3
3.0
1.6
If a machine has an MA of 3.5 and you apply 400 N, what's the max weight it can lift?
1000 N
1200 N
1400 N
1500 N
A lever lifts a crate 5.0 cm while the user applies force over 80.0 cm. What’s the efficiency if MA = 3.5?
10%
50%
75%
6.25%
A worker pushes a lawn mower with 23.0 N at 60° for 18.5 m at 1.25 m/s. What is the power?
100 W
135 W
90 W
80 W
Hoover Dam generates 2.0 × 10⁶ kW of power daily. How much work is done in one day?
1.7 × 10¹¹ J
2.4 × 10¹¹ J
1.8 × 10¹² J
1.7 × 10¹³ J
A 10 kg box is lifted to a height of 2 m in 5 seconds. What is the power used?
20 W
39 W
50 W
200 W
What is the work done by a force of 100 N applied at an angle of 45° across 10 m?
707 J
1000 J
500 J
1414 J
If a machine has 60% efficiency and you input 500 J of energy, how much useful work is done?
300 J
500 J
250 J
600 J
If W=Fd
Then how much work is done if it takes 20 N to move a box 10 meters
2 N
200 J
20 J
200 N
