I need help on question 6.8 6.6. A 1000 kg car moving at 7.0 m/s tries to round a corner in a circular arc of radius 9.0 m. Theroadway is flat and level.(a) What size is the centripetal force that acts on the car as it successfully rounds the curve?(b) What is the minimum coefficient of friction between the tires and the road that will allowthe car to make it through the turn without slipping?6.7. A 0.10 kg ball attached to a 0.20 m rod of very small inertiamoves in a vertical circle in such a way that its speed remainsconstant. Let T₁, T2, T3, and T4 be the tensions in the rod atpositions 1, 2, 3, and 4 in the figure to the right.(a) Rank the tensions in order of magnitude, greatest first. 2(b) What rotational speed is required at position 3 to keep T3barely greater than zero?3(c) At that speed, what is the tension at position 1?6.8. A cannon launches two shells at the same speed, one at 55° above horizontal and one at 35°above horizontal. Which shell, if either, has the longer range? Which shell, if either, is in theair longer? Assume level ground and ignore air resistance.16.9. Soccer players often fool around in practice with something called the "crossbar challenge"which is an attempt to kick the ball from the ground and have it hit the crossbar of the goal,which is 8.0 ft or 2.4 m above the ground.Use your physics skills to calculate an initial velocity (speed and angle) that could be usedto hit the crossbar from a point where the ball is on the ground 11 m away from the goal.Neglect air friction for your calculations. (We'll assume that the air friction doesn't causethe ball to be deflected by more than half the diameter of the ball, so it still hits the bar.However, as any soccer player knows, air friction does actually cause more of an effect thanthis, especially if the ball is spinning.)There are multiple correct answers to this question, so your task is to clearly show that thevalues you give are correct.

Name: I need help on question 6.8 6.6. A 1000 kg car moving at 7.0 m/s tries
Uploaded: 2024-03-20T06:57:47.000Z
Channel: Bartleby
Description: I need help on question 6.8 6.6. A 1000 kg car moving at 7.0 m/s tries to round a corner in a circular arc of radius 9.0 m. Theroadway is flat and level.(a) What size is the centripetal force that acts on the car as it successfully rounds the curve?(