4. A sled of mass M is pulled to the right with a tension force of T at an angle of 0°. There is negligible
friction on the sled.
a. Draw a free-body diagram for the sled
b. Derive an expression for the normal force on the sled.
c. Derive an expression for the acceleration of the sled.
Horizontal surface
d. How would the magnitude of the normal force change if the angle of the tension force
increased? Briefly justify your answer.



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