Grade 10 Forces & equilibrium worksheet

What is on the worksheet

1. A 10 kg object is in a model field of 1.6 N/kg. Find weight.

2. A force and acceleration have opposite signs in an answer for positive constant mass. What should be checked?

3. A sliding block has normal force 347 N and kinetic friction coefficient 0.8. Find the friction-force magnitude in this model. Round to 3 decimal places if needed. Answer in N.

4. A 20 kg cart has horizontal forces 92 N right and 114 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².

5. A mass of 51 kg is in a model gravitational field of 10 N/kg. Find its weight. Round to 3 decimal places if needed. Answer in N.

6. On a weightless balanced beam, 48 N acts 7 m left of the pivot. What downward force at 4 m right balances it? Forces are perpendicular to the beam. Round to 3 decimal places if needed. Answer in N.

7. A 5 kg cart has horizontal forces 55 N right and 107 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².

8. A sliding block has normal force 41 N and kinetic friction coefficient 0.5. Find the friction-force magnitude in this model. Round to 3 decimal places if needed. Answer in N.

9. A sliding block has normal force 340 N and kinetic friction coefficient 0.8. Find the friction-force magnitude in this model. Round to 3 decimal places if needed. Answer in N.

10. If an unchanged object moves to a weaker gravitational field, what usually changes?

    1. Its mass necessarily
    2. Its number of protons necessarily
    3. Its weight

11. On a weightless balanced beam, 7 N acts 3 m left of the pivot. What downward force at 10 m right balances it? Forces are perpendicular to the beam. Round to 3 decimal places if needed. Answer in N.

12. On a weightless balanced beam, 65 N acts 9 m left of the pivot. What downward force at 9 m right balances it? Forces are perpendicular to the beam. Round to 3 decimal places if needed. Answer in N.

13. A 12 kg cart has horizontal forces 108 N right and 38 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².

14. Which SI unit is used for mass?

    1. kg
    2. N/kg
    3. N

15. A 16 kg cart has horizontal forces 67 N right and 71 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².

16. An ideal spring obeys F = kx with k = 380 N/m. A force of 15 N is applied within its linear range. Find its extension. Round to 3 decimal places if needed. Answer in m.

17. A sliding block has normal force 319 N and kinetic friction coefficient 0.5. Find the friction-force magnitude in this model. Round to 3 decimal places if needed. Answer in N.

18. A 14 kg cart has horizontal forces 102 N right and 73 N left. No other horizontal forces act. Taking right as positive, find its acceleration. Round to 3 decimal places if needed. Answer in m/s².

19. An ideal spring obeys F = kx with k = 140 N/m. A force of 28 N is applied within its linear range. Find its extension. Round to 3 decimal places if needed. Answer in m.

20. A sliding block has normal force 73 N and kinetic friction coefficient 0.3. Find the friction-force magnitude in this model. Round to 3 decimal places if needed. Answer in N.