Consider the 65.0-kg ice skater being pushed by two others shown in Figure 7. (a

Question

Consider the 65.0-kg ice skater being pushed by two others shown in Figure 7.

(a) Find the direction and magnitude of Ftot, the total force exerted on her by the others, given that the magnitudes F1 and F2 are 22.4 N and 16.6 N, respectively.

Consider the 65.0-kg ice skater being pushed by two others shown in Figure 7. (a) Find the direction and magnitude of Ftot, the total force exerted on her by the others, given that the magnitudes F1 and F2 are 22.4 N and 16.6 N, respectively. ° (counterclockwise from the direction of F1 is positive) N (b) What is her initial acceleration if she is initially stationary and wearing steel-bladed skates that point in the direction of Ftot? m/s2 (c) What is her acceleration assuming she is already moving in the direction of Ftot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in contact. m/s2 (in the direction of Ftot)

Explanation / Answer

F net mag = 27.88 N

direction

36.5 degreees with + x axis in anti clock wise direction

accelrtation magnitude = Fnet /m = 0.4289 m/s^2

for c

accelration = (Fnet - u*mg) / m = in direction of Fnet

we need u = coefficent of kinetic friction

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