Exit Ticket Lecture 3: Circular motion in vertical plane

Why does an object moves with constant velocity in circular path experiences acceleration.

• I do not know

• because, velocity is a scalar

• because, velocity is a vector. it has direction and maginitude. Even the direction changes, and magnitude do not, the acceleration exists.

• no acceleration if velocity is constant

Tags

NGSS.HS-PS2-1

Consider the case of vertical circular motion when you are riding in a Ferris Wheel. What is the correct expression that relates all the forces when you are at the top of the circle?

• Fc = mg+N

• Fc = mg-N

• Fc = N-mg

• Fc = N

Consider the case of vertical circular motion when you are riding in a Ferris Wheel. What is the correct expression for normal forces when you are at the bottom of the circle?

• N=mg-Fc

• N=Fc+mg

• N=Fc-mg

• N=mg

Tags

NGSS.HS-PS2-4

A 0.20 kg object is attached to one end of an inelastic string of length 1.20 m. The object is whirled in a vertical circle If the speed of the object at point A is 3.60 m s^-1, calculate the tension in the string when the object is at maximum.

• 0.32 N

• 2.98 N

• 1.98 N

• 0.198 N

Tags

NGSS.HS-PS2-1

A 0.20 kg object is attached to one end of an inelastic string of length 1.20 m. The object is whirled in a vertical circle if the tension in the string is 0.2 N, calculate the velocity in the string when the object is at maximum.

• 2.3 m/s

• 3.6 m/s

• 4.2 m/s

• 2.2 m/s

Tags

NGSS.HS-PS2-1