The equation for the radial component is v r = r dot. r is equal to 0.4*theta. T

Question

The equation for the radial component is vr = r dot. r is equal to 0.4*theta. The derivative of r is just 0.4. So why isnt 0.4 the radial component??

The slotted link is pinned at O, and as a result of the constant angular velocity = 3 rad/s it drives the peg? for a short distance along the spiral guide r = (0.40) m, where is in radians (Figure 1) Determine the radial component of the velocity of P at the instant /3 rad. Express your answer to three significant figures and include the appropriate units. Vr = 1.20 Submit My Answers Give Up Correct Figure 1 yof1 0.5 m r = 0.4 = 3 rad

Explanation / Answer

dr/dt = d(0.4*theta)/dt = 0.4*dtheta/dt = 0.4*3 = 1.20

Vr is dr/dt not r, r =0.4Q, dr/dt is not 0.4

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