IB Physics SL A.2.13 Weight

Practise calculating weight from local gravitational field strength, resolving it on slopes and distinguishing gravitational force from apparent weight or weightlessness in free…

Exam points

calculate weight with the local value of g and resolve mg into components parallel and perpendicular to a slope
explain orbital weightlessness as shared free-fall acceleration and zero normal reaction, not zero gravity
draw weight vertically towards the attracting body's centre with a scale consistent with the force diagram

[Maximum number: 2]

A small ball of mass m is moving in a horizontal circle on the inside surface of a frictionless hemispherical bowl.

Figure for Question A.2.13—Weight question 1 — IB Physics SL

The normal reaction force N makes an angle $\theta$ to the horizontal.

On the diagram, construct an arrow of the correct length to represent the weight of the ball.

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A.2.13—Weight question 1