Recent content by kdm06

Thank you so much. I'm sorry I didn't have picture because it was confusing. I just don't know how to put a picture on here. I'll try next time. Thank you.

Homework Statement A triangular body changes orientation as the suspporting links rotate. At the moment shown, theta = 90 deg, theta_dot = 5 rad/s, and beta = 45 deg. Determine vA and the angular velocity of the triangular body. rB/C = 2j cm and rB/A = 5i cm Points E and D are fixed...

Can someone please help me?

Homework Statement Point O is fixed in space. Gear 1 has an angular velocity of 20k rad/s, and Gear 2 has an angular velocity of -10k rad/s. r1 = 0.3 m and r2 = 0.2 m. What is the angular velocity of the connecting arm OA, and what is the speed of A? Gear 1 is larger than Gear 2. Gear 1...

ok. so for part a the length of the cord would be 9.7? but for part b i understood it as she does hit the ground since the spring stiffness is 10 percent less. however would i use 9.7 as the 'x' in PE(sp) and use 57.3 as the 'h' in PE(g)?

Oh...sorry! OK...so the net force acting on her at rest is weight. So would the extension just be 67 m?

Since acceleration isn't given, should I use F=ma and find acceleration? Then use a constant accelaration equation to find the cord extension?

So, did I go about part a incorrectly or did I substitute the incorrect amount for part b?

Could someone please look over my work? I may have set it up incorrectly.

Thank you! i got the answer. i just want to know for final energy, the 1 m the springs are still stretched is that from the unstretched length or an additional stretch?

Homework Statement A bungee jumper needs to calculate how much bungee cord to attach to herself so that it will bring her to rest 3m above ground. The spring constant of the bungee cord is 22 N/m, and she has a mass of 55kg. Neglect the bungee cord's mass. a. How long a bungee cord is...

Thank you for your help. But why would the string still be tensed by 2m after it reaches the top of the room?

Homework Statement A 10kg mass, attached by means of two springs to the ceiling, is held against the floor and is then released. How fast will it be traveling when it hits the ceiling? The spring constant of each spring is 80 N/m, and each spring has an unstretched length of 1 m. Assume that...

A 10kg mass, attached by means of two springs to the ceiling, is held against the floor and is then released. How fast will it be traveling when it hits the ceiling? The spring constant of each spring is 80 N/m, and each spring has an unstretched length of 1 m. Assume that springs become loose...