The 107-lb boy has taken a running jump from the upper surface and lands on his 10-Ilb skateboard with a velocity of 11 ft/sec in the plane of the figure as shown. If his impact with the skateboard has a time duration of 0.05 sec, determine the final speed v along the horizontal surface and the total normal force N exerted by the surface on the skateboard wheels during the impact. 22° 11 ft/sec Answers: ft/sec N- i Ib

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A: To prove: The ∇1r=-r→r3. Given: The given vector is r→=xi^+yj^+zk^.

Q: If b = 10 in, h = 5 in, X1= 5 in, and Y1=2 in, determine the magnitude of dy that would be used in…

A: given-         b=10in, h=5in X1=5in Y1=2infind- dy

Q: If r = (x, y, z), prove that V - (²-) = - = /1

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A:

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Q: 4m 10m F 6 m, 8 m Zom- 8m

A: Find the moment about origin (O) Given data :-  F = 300 N

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A: Given data: Ft = 90 kN Need to determine the n component and magnitude of the F.

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Slope and Deflection

The slope in a deflected beam is described as an angle in radians made by the tangent of the section with the original axis of the beam. The deflection at any point on the axis of the beam is defined as the lateral displacement of the point before and after loading.