PhysicsLAB CP Workbook
Force and Acceleration

Use the following information to answer the next six questions.
 
Shelly the skater, total mass 25 kg, is propelled by rocket power.
 
 
Complete Table I. (neglect any resistance)
 
Force
(N)
acceleration
(m/sec2)
100
200
250
 
 
Complete Table II for a constant 50-N resistance.
 
Force
(N)
acceleration
(m/sec2)
50
100
200
 
 
Refer to the following information for the next five questions.

Block A on a horizontal friction-free table is accelerated by a force from a string attached to Block B. B falls vertically and drags A horizontally. Both blocks have the same mass m. (Neglect the string's mass.)
 
The mass of the system [A+ B] is
 
The force that accelerates [A + B] is the weight of
 
The weight of B is
 
Acceleration of [A + B] is
 
Calculate the exact acceleration of [A + B] in m/sec2 

 

Refer to the following information for the next three questions.

Suppose A is still a 1-kg block, but B is a low-mass feather (or a coin).
 
Compared to the acceleration of the previous system, the acceleration of [ A + B ] here is
 
and is
 
In this case the acceleration of B is
 
Refer to the following information for the next two questions.

Suppose A is a feather, or coin, and B has a mass of 1 kg.
 
 
The acceleration of [A + B] here is
 
In this case the acceleration of B is
 
Summarizing the three cases we have examined, where the weight of one object causes the acceleration of two objects, we see the range of possible accelerations is


 

Refer to the following information for the next three questions.

A ball rolls down a uniform-slope ramp.
 

Acceleration is
 
If the ramp were steeper, acceleration would be
 
When the ball reaches the bottom and rolls along the smooth level surface it
 




Paul G. Hewitt
Copyright © 1984-2005
All rights reserved.
Used with written permission.
PhysicsLAB
HTML conversion
Copyright © 1997-2017
Catharine H. Colwell
All rights reserved.
Mainland High School
Daytona Beach, FL 32114