Question

Centripetal Froce...

A. Accelerates an object without changing its speed

B. is center seeking

C. is propotional to an object mass

D. All of the above

WHich statement is true of radians

A. They are equivalent to a measurement of degrees

B. It is the ratio of two lengths: the radius and the arc length

C. 2 radians= 360 degrees

D. All of the above

In this expermient, for a given radius, the larger the measured rotational period...

A. The larger the velocity

B. The larger the energy

C. The samller the centripteal accleration

D. None of the above

In the four trials of one needs to accurately measure...

A. The length of four different radii and the corresponding time for 10 revolutions

B. The weight hanger

C. The mass of the stopper

D. All of the above

In Exercise 2, increasing the hanger weight would...

A. Have no effect on the required speed ot time of rotation

B. Increase the required speed of rotation

C. Decrease the required speed of rotation

D. Increase the measured time of rotation

In Exercise 3, increasing he rotating mass would ....

A. Have no effect on the required speed or time of roattion

B. Increase the required speed of rotation

C. Decrease the requiired speed of rotation

D. Decrease the measured time of rotation

Please answer all for a positive feedback

Answer 1

* Centripetal force accelerate object without changing its speed

Is center seeking

Proportional to mass

Hence option (D) is correct

* Radian is equivalent to degree, option (A)

* Larger the rotational period, smaller will be velocity so smaller will be centripetal acceleration (v^{​​​​​2} /R) ,hence option (C)

* In exercise 3, in increasing the mass of object, have no effect on rotational speed or time period. Option (A)

Other questions have missing data