Recent content by jarny

I am not following you here, sorry. can you put it in terms of the equations? (don't do work but is it possible just to say it a different way? thanks and sorry

Well I thought since the ball is at an angle the sum of the forces would be -f_gsintheta+fapp*costheta

so only the x component of the fapp is all I need?

Homework Statement In shot putting, many athletes elect to launch the shot at an angle that is smaller than the theoretical one (about 42°) at which the distance of a projected ball at the same speed and height is greatest. One reason has to do with the speed the athlete can give the shot...

Thanks

So the F->applied would be 12*a which I found?

Wait how would I found F-> Do I use: 23=F-> + X and 11=F-> -X ? Then F->= 17 N?

Thank very much

Homework Statement In Figure 5-50a, a constant horizontal force F->a is applied to block A, which pushes against block B with a 23.0 N force directed horizontally to the right. In Figure 5-48b, the same force is applied to block B; now block A pushes on block B with a 11.0 N force directed...

I have the free body diagram, the f-> is confusing me. F_(g,m_1)=9.8*3.3=32.34 Newtons__________ T-mgsin \theta = ma the horizontal force is f-> and it is moving in the positive direction. All that I see for x is : Sum(F_x)=fcos \theta + -F_gsin \theta So...

So would I have T-1.2*9.8*sin(26)=1.2*a and T-3.3*9.8*sin(0)=3.3*a so would I substitute and solve for T? and where does f-> come in? is it (T-3.3) for equation two? thanks

Wait would the objects have different acceleration?

Homework Statement a box of mass m2 = 1.2 kg on a frictionless plane inclined at angle θ = 26°. It is connected by a cord of negligible mass to a box of mass m1 = 3.3 kg on a horizontal frictionless surface. The pulley is frictionless and massless. (a) If the magnitude of the horizontal force...

thank you for the welcome. I am not near my scanner at the moment but let me try http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c05/fig05_18.gif problem 1 http://edugen.wiley.com/edugen/courses/crs1650/art/qb/qu/c05/q32.jpg problem 2

Homework Statement I have two questions: 1. Let the mass of the block be 8.2 kg and the angle θ be 37°. Find (a) the tension in the cord and (b) the normal force acting on the block. (c) If the cord is cut, find the magnitude of the block's acceleration. 2.In the figure, a crate of...