1. A car is rounding a curve with aradius of 12.0 m at 8.2 m/swhen it hits a slippery patch. What isthe minimum coefficient ofstatic friction between the car and theslick patch of the road thatwill allow the car to round the cornersafely?
2. A 20 kg concrete block is supportedby two cables. The cablesmake angles of 60 degrees with theceiling. Find the tensions in thecable.
3. A girl is sledding in the winter; thetotal mass of the sledand girl is 55kd. The coefficient of kineticfriction between thesled and the snow is 0.14. She chooses a runwhere the incline is 24degrees. What is heracceleration?
4. A man is dragging a trunk in a busyairport at a constantvelocity. He applies a force at an angle of40 degrees above thehorizontal. The trunk weighs 240 N. If thecoefficient of frictionis 0.35, with that force is he pulling thetrunk?
5. When strtching a tennis net betweentwo posts, it isrelatively easy to pull one end of the net hardenough to removemost of the slack, but you need a winch to takethe last slack outof the net to make the top almost completelyhorizontal. Why is thistrue?
6. A target is lying flat on the ground45m from the bottom of an18m cliff. A boy is standing at the topof the cliff with a bow andarrow. If they boy fires the arrowparallel to the ground from thetop of the cliff, how fast shouldit be going so that it hits thetarget?
1. A car is rounding a curve with aradius of 12.0 m at 8.2 m/swhen it hits a slippery patch. What isthe minimum coefficient ofstatic friction between the car and theslick patch of the road thatwill allow the car to round the cornersafely?
2. A 20 kg concrete block is supportedby two cables. The cablesmake angles of 60 degrees with theceiling. Find the tensions in thecable.
3. A girl is sledding in the winter; thetotal mass of the sledand girl is 55kd. The coefficient of kineticfriction between thesled and the snow is 0.14. She chooses a runwhere the incline is 24degrees. What is heracceleration?
4. A man is dragging a trunk in a busyairport at a constantvelocity. He applies a force at an angle of40 degrees above thehorizontal. The trunk weighs 240 N. If thecoefficient of frictionis 0.35, with that force is he pulling thetrunk?
5. When strtching a tennis net betweentwo posts, it isrelatively easy to pull one end of the net hardenough to removemost of the slack, but you need a winch to takethe last slack outof the net to make the top almost completelyhorizontal. Why is thistrue?
6. A target is lying flat on the ground45m from the bottom of an18m cliff. A boy is standing at the topof the cliff with a bow andarrow. If they boy fires the arrowparallel to the ground from thetop of the cliff, how fast shouldit be going so that it hits thetarget?
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