Recent content by ethex

I have solved this question. Thanks everyone for the hints and help assisted. Good day.

Taking moments about D, -3Ay + 0.5Ax + 200 + 250 = 0 Relating Ay with Ax, Ay = h1Ax Taking summation of upward forces of the system, Ay + Dy = 350 Taking summation of all horizontal forces of the system, Ax = -Dx Relating Dy and Dx, Dy = (h+0.5)Dx I'm stucked now. If i were to apply...

But i cannot seem to get equations with h if i take moments about point A or D. And if i take at B or C, it seems to have many unknowns in the equations.

Homework Statement A cable of length L is supported at different elevations and is used to suspend two masses m1=10kg and m2=25kg at B and C respectively, as shown in Fig 2. The vertical heights of B and C relative to the support at A are denoted by h1 and h2 respectively. For simplicity...

Homework Statement A truck of mass M and a car of mass m are traveling at the same speed. Suppose M>m. Now the drivers of both vehicles suddenly apply their brakes and the vehicles slide along the road, which has coefficient of kinetic friction uk. the car stops after sliding a distance d...

Yes! thank you.!

Ok. Let the angle be theta, Friction force = 0.4 x 100g x cos theta F - 100g sin theta - 40g cos theta = 0 F = 980 sin theta + 392 cos theta dF/dtheta = 980 cos theta - 392 sin theta Let derivative = 0 tan theta = 2/5 i got back the same ans! What is wrong?

I got 17g!

Ui + Ki = Uf + Kf 0 + 0.5mVbtm^2 = 2mgR + 0.5mVtop^2 Right?

Homework Statement A person is dragging a packing crate of mass 100kg across a rough floor where the coefficient of kinetic friction is 0.4. He exerts a force F just sufficient to keep the crate moving at a constant velocity. At what angle above the horizontal should his pulling force F be for...

Homework Statement A ball of mass m is suspended from a rope of length R. The ball is set into freely swinging circular motion a vertical plane. The centripetal acceleration of the ball at the top of the circle is 13g. What is the centripetal acceleration of the ball at the bottom of the...

Thank you, that is what i am missing out.

KEinitial + Uinitial = KEfinal + Ufinal 0 + 0.5(600)(0.14)^2 + (3.2)(9.8)(0.14) = 0.5 x 3.2 x v^2 + 0 Is this right?

Homework Statement The force constant of a spring is 600 N/m and the un-stretched length is 0.72m. A 3.2kg block is suspended from the spring. An external force slowly pulls the block down, until the spring has been stretched to a length of 0.86m. The external force is then removed, and the...

Oh i Got it! Thank you grzz and have a great day ahead!