Practice Motion Of Centre Of Mass (6.3) - SYSTEMS OF PARTICLES AND ROTATIONAL MOTION

Practise this section

8 questions

Flashcard drill
2 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
Sign up to start the exercise
Quiz
2 questions · about 1 min · pass mark 70%. Hints available.
Sign up to start the quiz

6 sample questions

Question 1.
Define the Center of Mass.
Show hintHide hint
Think about where the mass is concentrated.
Question 2.
What is the formula for the velocity of the center of mass?
Show hintHide hint
Remember V refers to velocity and P to momentum.
3Question 3.
What is the center of mass?
Show hintHide hint
Think about how mass is distributed.
4Question 4.
True or False: Internal forces affect the motion of the center of mass.
Show hintHide hint
Recall the definition of internal and external forces.
Question 5.
A system consists of 3 particles with masses 1 kg, 2 kg, and 3 kg at positions (1,0), (2,2), and (4,0) respectively. Find the center of mass.
Show hintHide hint
Use the weighted average formula to calculate.
Question 6.
A spaceship is traveling in a straight line and explodes, fragmenting into multiple pieces. Discuss how the center of mass continues to move post-explosion.
Show hintHide hint
Think of Newton's First Law about inertia.

4 more questions in this section. Enroll free to practise them all.