Centripetal Force and Gravitation Worksheet
Grade 12 Physics worksheet on Centripetal Force and Gravitation, covering key concepts, calculations, and applications.
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Centripetal Force and Gravitation
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Read each question carefully and provide your answers in the space provided. Show all your work for calculation problems.
1. Which of the following is the primary force responsible for keeping a satellite in orbit around Earth?
Centrifugal force
Magnetic force
Gravitational force
Normal force
2. What is the direction of the centripetal force acting on an object moving in a circular path?
Tangent to the circle
Outward from the center
Inward towards the center
Perpendicular to the plane of motion
3. According to Newton's Law of Universal Gravitation, the gravitational force between two objects is directly proportional to the of their masses and inversely proportional to the square of the between their centers.
4. The acceleration experienced by an object undergoing uniform circular motion is called acceleration, and it is always directed the center of the circle.
5. Explain the concept of weightlessness experienced by astronauts in orbit. Is it because there is no gravity in space?
Match the term with its correct definition.
6. Centripetal Force
a. The force that pulls objects towards the center of the Earth.
7. Gravitational Constant (G)
b. The force required to keep an object moving in a circular path.
8. Orbital Velocity
c. The speed an object needs to maintain a stable orbit.
9. Law of Universal Gravitation
d. A fundamental physical constant used in gravitational calculations.
10. A satellite of mass 1500 kg is in a circular orbit around Earth at an altitude of 600 km. Calculate the speed of the satellite. (Given: Mass of Earth = 5.97 x 10^24 kg, Radius of Earth = 6.37 x 10^6 m, G = 6.67 x 10^-11 Nm^2/kg^2)
