Everything You Need in One Place
Homework problems? Exam preparation? Trying to grasp a concept or just brushing up the basics? Our extensive help & practice library have got you covered.
Learn and Practice With Ease
Our proven video lessons ease you through problems quickly, and you get tonnes of friendly practice on questions that trip students up on tests and finals.
Instant and Unlimited Help
Our personalized learning platform enables you to instantly find the exact walkthrough to your specific type of question. Activate unlimited help now!
Make math click 🤔 and get better grades! 💯Join for Free
- Rotational equilibrium of masses balanced on a single pivot point
A uniform 1.10 kg rod is balanced on a pivot and two masses of 2.50 kg and 1.25 kg are hung as shown. At what distance away from the pivot should the 1.25 kg mass be hung so that the two masses balance?
- Rotational equilibrium with two pivot points
A 1.75 kg uniform book rests on a 1.10 kg uniform horizontal shelf as shown. What is the force exerted on the shelf by each support A and B?